fix(orchestrator): reap registry rows whose bottle is no longer running

A registry row only ever left the registry two ways: an explicit
teardown_bottle (the launcher's cleanup callback) or the same-IP supersede
sweep in register(). Neither runs when the launching CLI dies hard, so the
row outlives its container.

That orphan is not inert. Source IPs are recycled by the backend's DHCP and
by_source_ip fail-closes on ambiguity, so a leftover row at a reused address
resolves no policy at all for the next bottle that lands there — and a
bottle with no policy denies every host, which surfaces to the agent as
"host X is not in the allowlist" for hosts that were never the problem.

Add reap_absent/reconcile and call it from the macOS launch path before
registering, so each launch self-heals the registry. Restores the invariant
the data plane needs: at most one active row per live address, and none for
a dead one. The second half matters as much as the first — when several rows
claim a *live* address the newest wins and the rest are swept, otherwise a
recycled address stays ambiguous, which is exactly the bricked state.

The host supplies the live set because the orchestrator runs inside the
infra container and cannot see the backend. A grace window exempts rows
younger than it, so reconciliation cannot race a bottle still coming up, and
a reconcile failure is logged rather than blocking an otherwise-fine launch.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/unit/test_macos_consolidated_launch.py

@@ -134,3 +134,69 @@ class TestTeardown(unittest.TestCase):
 
 if __name__ == "__main__":
     unittest.main()
+
+
+class TestLiveSourceIps(unittest.TestCase):
+    """The reconciliation input: the host enumerates its own bottles because
+    the orchestrator, inside the infra container, cannot see the backend."""
+
+    def _agents(self, *slugs: str) -> list[Mock]:
+        return [Mock(slug=s) for s in slugs]
+
+    def test_maps_slugs_to_container_addresses(self) -> None:
+        from bot_bottle.backend.macos_container.consolidated_launch import live_source_ips
+        with patch(f"{_MOD}.enumerate_active", return_value=self._agents("a", "b")), \
+                patch(f"{_MOD}.container_mod.try_container_ipv4_on_network",
+                      side_effect=["10.0.0.1", "10.0.0.2"]) as ip:
+            got = live_source_ips("net0")
+        self.assertEqual(["10.0.0.1", "10.0.0.2"], got)
+        self.assertEqual("bot-bottle-a", ip.call_args_list[0].args[0])
+
+    def test_containers_without_an_address_are_skipped(self) -> None:
+        """A container that hasn't been given a DHCP address yet contributes
+        nothing — the reap's grace window, not this list, protects it."""
+        from bot_bottle.backend.macos_container.consolidated_launch import live_source_ips
+        with patch(f"{_MOD}.enumerate_active", return_value=self._agents("a", "b")), \
+                patch(f"{_MOD}.container_mod.try_container_ipv4_on_network",
+                      side_effect=["", "10.0.0.2"]):
+            self.assertEqual(["10.0.0.2"], live_source_ips("net0"))
+
+
+class TestRegisterAgentReconciles(unittest.TestCase):
+    """Registration self-heals the registry first: an orphan row at a recycled
+    address makes attribution ambiguous, which resolves no policy at all and
+    denies every host for the bottle being launched."""
+
+    def _register(self, client: Mock) -> None:
+        with patch(f"{_MOD}.OrchestratorClient", return_value=client), \
+                patch(f"{_MOD}.provision_git_gate"), \
+                patch(f"{_MOD}.live_source_ips", return_value=["10.0.0.7"]):
+            register_agent(
+                _egress_plan(), _git_plan(),
+                source_ip="10.0.0.7", endpoint=_endpoint(),
+            )
+
+    def test_reconciles_before_registering(self) -> None:
+        client = _client()
+        calls: list[str] = []
+
+        def _reconcile(*_args: object, **_kwargs: object) -> list[str]:
+            calls.append("reconcile")
+            return []
+
+        def _register_bottle(*_args: object, **_kwargs: object) -> RegisteredBottle:
+            calls.append("register")
+            return RegisteredBottle("b1", "tok")
+
+        client.reconcile.side_effect = _reconcile
+        client.register_bottle.side_effect = _register_bottle
+        self._register(client)
+        self.assertEqual(["reconcile", "register"], calls)
+        client.reconcile.assert_called_once_with(["10.0.0.7"])
+
+    def test_a_reconcile_failure_does_not_block_the_launch(self) -> None:
+        from bot_bottle.orchestrator.client import OrchestratorClientError
+        client = _client()
+        client.reconcile.side_effect = OrchestratorClientError("unreachable")
+        self._register(client)
+        client.register_bottle.assert_called_once()